The distance between the 26 floors in front is 50 meters. When is the winter solstice on the ninth floor behind?

According to the information you provided, suppose you are in the northern hemisphere. During the winter solstice, the solar altitude angle in your area is low.

The distance between buildings is 50 meters. Assuming that the heights of the previous floors are all standard floors (3m), the total height of the 26th floor is 78m.

At this time, if you are in the northern hemisphere, the sun will be on the tropic of Capricorn during the winter solstice and directly in the southern hemisphere, and the sun altitude angle in the northern hemisphere will be lower.

According to the calculation, the sun rises at 6 o'clock local time and sets at 18 o'clock in winter solstice.

Therefore, if you are on the 26th floor ahead, at 6 o'clock local time on the winter solstice, the sun will rise and shine on your window. At sunset, the sun is at a low angle and may not shine on your window.

If you are on the ninth floor in the back, you may be blocked by the building in front. Even if the sun rises at a low angle, it is difficult to shine on your window.

Therefore, the specific situation also needs to consider the height angle of the sun in your area during the winter solstice, the height of your floor and the height of the building in front of you.